[StuBeeDoo]

(If I have posted this in the wrong section, would a mod. move it to a more appropriate section, please?)

Some of my track sections regularly suffer from loose rail joints.  This is, in part, due to the fact that being a rally loop the base is considerably uneven in parts.
I would best describe my layout as semi-permanent, so it doesn't have to be taken apart often - I think the last time was at least 5 years ago, and I have no plans for it any time soon.
The proper solution is probably to solder jumper wires between each track section on the underside, but has anyone tried running solder into the rail joints (ie from the top)?  If so, how successful was this?

Thanks in anticipation.